// Example 10 — Static Hello Pipeline
//
// The same linear pipeline as example 01, built with make_network() instead
// of the runtime Network builder. The topology is fully known at compile time:
// cycle detection is a static_assert, no build() step is needed, and start/stop
// require no virtual dispatch through a string-keyed node map.
//
//  [produce] --int--> [double_it] --int--> [print_it]

#include <kpn/kpn.hpp>
#include <chrono>
#include <iostream>
#include <thread>

static int  produce()        { return 42; }
static int  double_it(int x) { return x * 2; }
static void print_it(int x)  { std::cout << "result: " << x << '\n'; }

int main() {
    using namespace kpn;

    auto src  = make_node<produce,   "src" >(5);
    auto dbl  = make_node<double_it, "dbl" >(5);
    auto sink = make_node<print_it,  "sink">(5);

    auto net = make_network(
        edge(src.output<0>(),  dbl.input<0>()),
        edge(dbl.output<0>(),  sink.input<0>())
    );

    net.start();
    std::this_thread::sleep_for(std::chrono::milliseconds(100));
    net.stop();
}